Severe Weather and Heavy Rainfall from the Midwest to the Ohio Valley; Mid-Summer Heat Continues

Severe thunderstorm and heavy rainfall threats will persist from the Midwest to Lower Great Lakes through Monday, shifting into the Ohio Valley and Central Appalachians Monday evening into Tuesday. Mid-summer heat will continue across much of the CONUS this week, with record highs possible well into the 100s across the south-central High Plains. Read More >

Hazardous Weather Conditions

Current conditions at

Watertown, Watertown Municipal Airport (KATY)

Lat: 44.9°NLon: 97.15°WElev: 1745ft.

Fair

69°F

21°C

Humidity 81%
Wind Speed N 5 mph
Barometer 29.94 in (1013.0 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 9 Aug 8:53 pm CDT
Extended Forecast for

2 Miles SSW Watertown SD

  • Tonight

    Tonight: Mostly cloudy, with a low around 60. Northeast wind 5 to 7 mph.

    Low: 60 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 83. Southeast wind 7 to 10 mph.

    High: 83 °F

    Partly Sunny

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, mainly between midnight and 3am.  Mostly cloudy, with a low around 62. East wind 6 to 9 mph.  Chance of precipitation is 50%.

    Low: 62 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday

    Tuesday: A slight chance of showers before 10am, then a slight chance of showers and thunderstorms between 10am and 1pm.  Cloudy, then gradually becoming mostly sunny, with a high near 82. Northeast wind 6 to 9 mph.  Chance of precipitation is 20%.

    High: 82 °F

    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am.  Partly cloudy, with a low around 62. East northeast wind 5 to 7 mph.  Chance of precipitation is 40%.

    Low: 62 °F

    Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of thunderstorms before 7am.  Mostly sunny, with a high near 79. Northeast wind 5 to 10 mph.  Chance of precipitation is 10%.

    High: 79 °F

    Slight Chance
    T-storms then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A slight chance of showers and thunderstorms.  Mostly cloudy, with a low around 58. Northeast wind 6 to 8 mph.  Chance of precipitation is 20%.

    Low: 58 °F

    Slight Chance
    T-storms

  • Thursday

    Thursday: Mostly cloudy, with a high near 73. East northeast wind around 9 mph.

    High: 73 °F

    Mostly Cloudy

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 56. East wind 6 to 8 mph.

    Low: 56 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 60. Northeast wind 5 to 7 mph.
Monday
Partly sunny, with a high near 83. Southeast wind 7 to 10 mph.
Monday Night
A chance of showers and thunderstorms, mainly between midnight and 3am. Mostly cloudy, with a low around 62. East wind 6 to 9 mph. Chance of precipitation is 50%.
Tuesday
A slight chance of showers before 10am, then a slight chance of showers and thunderstorms between 10am and 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 82. Northeast wind 6 to 9 mph. Chance of precipitation is 20%.
Tuesday Night
A chance of showers and thunderstorms before 1am, then a slight chance of showers between 1am and 4am, then a slight chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 62. East northeast wind 5 to 7 mph. Chance of precipitation is 40%.
Wednesday
A slight chance of thunderstorms before 7am. Mostly sunny, with a high near 79. Northeast wind 5 to 10 mph. Chance of precipitation is 10%.
Wednesday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 58. Northeast wind 6 to 8 mph. Chance of precipitation is 20%.
Thursday
Mostly cloudy, with a high near 73. East northeast wind around 9 mph.
Thursday Night
Mostly cloudy, with a low around 56. East wind 6 to 8 mph.
Friday
A slight chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 73. Chance of precipitation is 20%.
Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Chance of precipitation is 40%.
Saturday
A chance of showers. Mostly cloudy, with a high near 72. Chance of precipitation is 30%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 57. Chance of precipitation is 30%.
Sunday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 73. Chance of precipitation is 20%.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSW Watertown SD
 44.89°N 97.17°W (Elev. 1732 ft)
8:37 pm CDT Aug 9, 2026
9pm CDT Aug 9, 2026-6pm CDT Aug 16, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database